Bonneville, LeSabre, Park Avenue 2000-2005

Fuel Injectors

Print

Removal & Installation



3.8L Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Relieve the fuel system pressure.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable
     
    Fuel lines
     
    Fuel rail
     
    Injector retaining clips
     
    Fuel injector

    Click image to see an enlarged view

    Fig. Exploded view of the fuel rail assembly-VIN 1 models



    Click image to see an enlarged view

    Fig. Exploded view of the fuel injector assembly

     

  6.  

To install:

  1. Install or connect the following:

    Fuel injector with new O-rings, coat the o-rings with clean engine oil prior to installation
     
    Injector retaining clips
     
    Fuel rail and torque the bolts to 89 inch lbs. (10 Nm). On VIN 1 models, tighten the fuel rail hold-down stud to 18 ft. lbs. (25 Nm), if equipped.
     
    Fuel lines
     
    Negative battery cable
     

  2.  

4.6L Engine

NOTE
If the fuel injectors are leaking, the engine oil may be contaminated with fuel.

  1. Remove the fuel rail.
  2.  
  3. Remove the fuel injector by pushing the locking tab on the fuel rail toward the center of the fuel rail.
  4.  
  5. Remove the fuel injector upper O-ring.
  6.  
  7. Remove the fuel injector lower O-ring.
  8.  
  9. Discard the injector O-ring seals.
  10.  

To install:


CAUTION
In order to reduce the risk of fire and personal injury that may result from a fuel leak, always install the fuel injector O-rings in the proper position. If the upper and lower O-rings are different colors (black and blue), be sure to install the blue O-ring in the upper position and the black O-ring in the lower position on the fuel injector. The O-rings are the same size but are made of different materials.


NOTE
The fuel injector O-rings should always be replaced whenever the fuel injectors are serviced. Be sure to install the correct O-ring for the fuel injector. If the O-ring is not seated properly, a vacuum leak is possible and driveability complaints may occur.

  1. Lubricate the new upper and lower O-rings with clean engine oil.
  2.  
  3. Install the new upper and lower injector O-rings on the fuel injector.
  4.  
  5. Install the fuel injector on to the fuel rail.
  6.  
  7. Install the fuel rail.
  8.  

 
label.common.footer.alt.autozoneLogo